Mean, Median & Mode
Five Number Summary
Formulas
Equations of Lines
Parallel and Perpendicular
100
When finding the MEDIAN, what's the first thing you need to do with the data values?
Rewrite them in order from least to greatest.
100
Find the RANGE of the following data set:
1, 2, 2, 4, 5, 6, 9
8
100
What is this formula called?
m=(y_2-y_1)/(x_2-x_1)
Slope Formula
100
Find the point-slope form equation of the line that passes through (4,2) and has a slope of 7.
y-2=7(x-4)
100
How do the slopes of parallel lines compare?
They are the equal (the same).
200
Find the MODE of the data set:
4, 6, 6, 7, 7 ,9, 10, 10, 10, 14
10
200
Find the LOWER QUARTILE (Q_1) of the following data set:
1, 2, 2, 4, 5, 6, 9
2
200
What is this formula called?
y=mx+b
Slope-Intercept Form
200
Find the point-slope form equation of the line that passes through (4,-3) and has a slope of 1/2 .
y+3=1/2(x-4)
200
How do the slopes of perpendicular lines compare?
They are OPPOSITE RECIPROCALS (their product is -1).
300
Find the MEDIAN of the data set:
4, 6, 6, 7, 7 ,9, 10, 10, 10, 14
8
300
Find the UPPER QUARTILE (Q_3) of the following data set:
1, 2, 2, 4, 5, 6, 9
6
300
What is this formula called?
Ax+By=C
Standard Form
300
Find the point-slope form of the equation of the line that passes through (-2,5) and (1, -4).
y-5=-3(x+2)
or
y+4=-3(x-1)
300
Write the point-slope form equation of the line that passes through (-4,1) and is parallel to y=2/5x-9.
y-1=2/5(x+4)
400
Find the MEAN of the data set:
4, 6, 6, 7, 7 ,9, 10, 10, 10, 14
8.3
400
Find the INTERQUARTILE RANGE (IQR) of the following data set:
2, 3, 6, 6, 8, 10, 11
7
400
What is this formula called?
y-y_1=m(x-x_1)
Point-Slope Form
400
Rewrite the equation of the line in slope-intercept form:
y-3=4/3(x+12)
y=4/3x+19
400
Write the point-slope form equation of the line that passes through (5,-3) and is perpendicular to y=1/2x+12.
y+3=-2(x-5)
500
Find the mean, median and mode of the data set:
7, 5, 2, 7, 3
mean: 4.8
median: 5
mode: 7
500
What is the RANGE, MEDIAN and IQR of the data set whose boxplot is shown below?
Range: 15
Median: 10
IQR: 9
500
Rewrite the equation in slope-intercept form:
6x-5y=20
y=6/5x-4
500
Find the slope-intercept form equation of the line that passes through (4,5) and has a slope of 3/2.
y=3/2x-1
500
Write the point-slope form equation of the line that passes through (-1,-7) and is perpendicular to 2x+3y=9.
y+7=3/2(x+1)